butterfly 会飞的蝴蝶

无需支撑一体打印。

额外需要φ40mm的皮筋两个。

虽然网店很便宜就可买到，但还是自己打印一个比较有趣。其实就飞那么一两秒种，吓人的效果倒是不错。特奉上step源文件，也许你可以修改的更好。

Boost Me

There is no need to support all-in-one printing.

Two additional 40mm rubber bands are required.

Although it is cheap to buy online, it is more fun to print one yourself. In fact, just fly for a second or two, and the scary effect is good. Special STEP source files, maybe you can modify it better.